1. Report on evaluation of the nutritional and sanitary quality of organic foods (Evaluation nutritionnelle et sanitaire des aliments issus de l’agriculture biologique, in French);AFSSA,2003
2. Official Methods of Analysis;AOAC,1980
3. Effects of long term soil acidification due to nitrogen fertilizer inputs in Wisconsin;Barak;Plant Soil,1997
4. Organic Farming, Prototype for Sustainable Agricultures;Bellon,2014
5. Organic farming and its relevance in India;Chhonkar,2008